Autonomous System

AS19901 Brightspeed

ISPActiveUnited StatesARIN

AS19901 (BRIGHTSPEED) is an ISP network operated by Brightspeed in United States, registered with ARIN. It has 1,238 IPv4 prefixes with 3,049,728 addresses and 51 IPv6 prefixes, which makes it the 190th largest of 82,558 active autonomous systems by IPv4 space.

IPv4 addresses3,049,728in 1,238 prefixes
IPv6 prefixes51≈ 1.2 × 10²⁸ addresses
Size rank#190of 82,558 active ASNs
Abuser scoreVery Low0.04% of its addresses flagged · method

Details

OrganizationBrightspeed
AS nameBRIGHTSPEED
Websitebrightspeed.com
Country United States (US)
Network typeISP
RegistryARIN
Abuse contactarin-abuse@brightspeed.com
Registered2022-11-07
Last updated2025-08-12

IPv4 prefixes

1,238 prefixes · 3,049,728 addresses
NetworkAddressesFirst – last address
67.6.0.0/1665,53667.6.0.0 – 67.6.255.255
71.210.0.0/1665,53671.210.0.0 – 71.210.255.255
71.213.0.0/1665,53671.213.0.0 – 71.213.255.255
71.217.0.0/1665,53671.217.0.0 – 71.217.255.255
71.219.0.0/1665,53671.219.0.0 – 71.219.255.255
75.170.0.0/1665,53675.170.0.0 – 75.170.255.255
75.173.0.0/1665,53675.173.0.0 – 75.173.255.255
97.114.0.0/1665,53697.114.0.0 – 97.114.255.255
174.19.0.0/1665,536174.19.0.0 – 174.19.255.255
184.100.0.0/1665,536184.100.0.0 – 184.100.255.255
67.234.0.0/1732,76867.234.0.0 – 67.234.127.255
67.238.128.0/1732,76867.238.128.0 – 67.238.255.255
71.221.0.0/1732,76871.221.0.0 – 71.221.127.255
71.221.128.0/1732,76871.221.128.0 – 71.221.255.255
71.222.128.0/1732,76871.222.128.0 – 71.222.255.255
75.165.0.0/1732,76875.165.0.0 – 75.165.127.255
75.165.128.0/1732,76875.165.128.0 – 75.165.255.255
144.163.0.0/1732,768144.163.0.0 – 144.163.127.255
144.163.128.0/1732,768144.163.128.0 – 144.163.255.255
174.24.128.0/1732,768174.24.128.0 – 174.24.255.255
174.30.0.0/1732,768174.30.0.0 – 174.30.127.255
184.97.0.0/1732,768184.97.0.0 – 184.97.127.255
207.50.0.0/1732,768207.50.0.0 – 207.50.127.255
9.138.64.0/1816,3849.138.64.0 – 9.138.127.255
9.138.128.0/1816,3849.138.128.0 – 9.138.191.255
The 25 largest of 1,238. The API and the database have all of them.

IPv6 prefixes

51 prefixes
  • 2606:5000:1000::/39
  • 2606:5000:1400::/39
  • 2606:5000:1c00::/39
  • 2606:5000:1e00::/39
  • 2606:5000:2800::/39
  • 2606:5000:2c00::/39
  • 2606:5000:3c00::/39
  • 2606:5000:3e00::/39
  • 2606:5000:4800::/39
  • 2606:5000:4e00::/39
  • 2606:5000:5000::/39
  • 2606:5000:5200::/39
  • 2606:5000:5400::/39
  • 2606:5000:5600::/39
  • 2606:5000:5800::/39
  • 2606:5000:5c00::/39
  • 2606:5000:5e00::/39
  • 2606:5000:6000::/39
  • 2607:6c40:2c00::/44
  • 2607:6c40:3400::/44
  • 2607:6c40:3420::/44
  • 2607:6c40:5400::/44
  • 2607:6c40:5800::/44
  • 2607:6c40:5c00::/44
  • 2607:6c40:6000::/44
The 25 largest of 51. The API and the database have all of them.

Query AS19901 with the API

The ASN lookup returns everything on this page as JSON, including every prefix. ASN lookups need an API key: a free account comes with 1,000 requests a day. 

curl "https://api.ipapi.is/?q=AS19901&key=YOUR_API_KEY"

Any address in its prefixes resolves to AS19901, with or without a key:

curl "https://api.ipapi.is/?q=67.6.0.1"

Largest networks in United States

AS749 United States Department of Defense (DoD)227,398,656 IPv4 addressesAS16509 Amazon.com, Inc.218,488,832 IPv4 addressesAS7018 AT&T Enterprises, LLC117,261,056 IPv4 addressesAS8075 Microsoft Corporation81,467,904 IPv4 addressesAS721 United States Department of Defense (DoD)72,988,416 IPv4 addressesAS7922 Comcast Cable Communications, LLC68,337,664 IPv4 addresses